[W126 Coupe] "Whirring" noise in the engine

[Markus Meyer]

Time to get a rubber tube or stethescope.

Thanks,
Markus

On Feb 1, 2011 10:08 AM, "Michael Ramay" <mike.ramay at gmail.com> wrote:

> Great idea but I still have the noise with all the v-belts off the car

> (nothing on the front of the motor rotating) and the smog pump wiring is

> unplugged.

>

> On Tue, Feb 1, 2011 at 6:25 AM, Olsson_Chris <Olsson at lumber.com> wrote:

>

>> I would bet money that it is your smog pump, sounds exactly like what I

had

>> going on.

>>

>>

>>

>> *From:* Michael Ramay [mailto:mike.ramay at gmail.com]

>> *Sent:* Tuesday, February 01, 2011 6:23 AM

>> *To:* Markus Meyer

>> *Cc:* Mercedes Coupes Mailing Lists

>> *Subject:* Re: [W126 Coupe] "Whirring" noise in the engine

>>

>>

>>

>> It's not turning and it's unplugged.

>>

>> On Tue, Feb 1, 2011 at 6:15 AM, Markus Meyer <markusfmeyer at gmail.com>

>> wrote:

>>

>> Is your air pump unplugged? That's what mine sounded like till I

>> unplugged it.

>>

>>

>>

>> Markus

>>

>> On Tue, Feb 1, 2011 at 9:00 AM, Michael Ramay <mike.ramay at gmail.com>

>> wrote:

>>

>> My '87 560SEL makes a "whirring" noise when it's first started. Sounds

>> almost like a bad bearing in the alternator and loud enough that my wife

is

>> commenting on it but in a mile or so it goes away.

>>

>> - I removed all the V-belts on the front of the motor, still have the

>> noise.

>> - Since it sounds like it's coming from the passenger side of the engine

up

>> high, I removed that valve cover then ran the engine - it was louder.

>> - Put in a new timing chain and new guides. !@#$%^&* - still have the

noise

>> but the car has noticeably more power.

>>

>> It REALLY needed the guides since one was broken in two and a 3" long

piece

>> is missing plus another had the hole for the retention pin wallowed out.

I

>> looked very carefully down the chain pathway during the installations but

no

>> sign of the piece.

>>

>> Will removal of the oil pan allow me to see much of the lower timing

chain

>> guide area? If the missing chain guide is jammed in there and rubbing on

the

>> rotating bits, why would the noise diminish in a minute or so of

operation?

>>

>> Suggestions??

>>

>> Thanks,

>> Mike

>>

>>

>>

>> The MB Coupes Website!

>> W126 SEC Mailing List

>> Postings remain property of MB Coupes, L.L.C.

>>

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